[NH2:1][C:2]1[CH:3]=[C:4]([NH:8][C:9](=[O:15])[O:10][C:11]([CH3:14])([CH3:13])[CH3:12])[CH:5]=[CH:6][CH:7]=1.[CH3:16][N:17]([CH3:22])[CH2:18][C:19](O)=[O:20].Cl.C(N=C=NCCCN(C)C)C>CN(C)C1C=CN=CC=1.ClCCl>[CH3:16][N:17]([CH3:22])[CH2:18][C:19]([NH:1][C:2]1[CH:3]=[C:4]([NH:8][C:9](=[O:15])[O:10][C:11]([CH3:12])([CH3:14])[CH3:13])[CH:5]=[CH:6][CH:7]=1)=[O:20]A 250 mL round bottom flask with stir bar was charged with tert-butyl 3-aminophenylcarbamate (5.315 g, 25.5 mmol), 2-(dimethylamino)acetic acid (2.94 g, 28.5 mmol), 1-ethyl-3-[3-(dimethylamino)propyl]-carbodiimide hydrochloride (5.17 g, 27.0 mmol) and 4-dimethylaminopyridine (0.09 g, 0.737 mmol) in dichloromethane (100 ml). The solution was stirred at ambient temperature for 2 hours. The reaction mixture was washed into a separatory funnel with an additional 100 mL dichloromethane and washed with 100 mL saturated sodium bicarbonate. The organics were dried over magnesium sulfate, filtered, and concentrated to provide the title compound. MS ESI+) m/e 294.0 (M+H)+.
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